Thuan Loi, Nguyen, Cam Phuong, Pham, AND Dinh Hung, Do. " Characteristics of EGFR Mutations in Plasma Samples in Non-Small Cell Lung Cancer Patients after Treatment with 1st and 2nd Generation of TKI at Bach Mai Hospital" VNU Journal of Science: Medical and Pharmaceutical Sciences [Online], Volume 38 Number 1 (24 March 2022)